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Joined: 17 Aug 2018
Posts: 22

PostPosted: Mon Apr 22, 2019 8:06 pm    Post subject: C4S Fuel Sender..? Reply with quote

Hi all.. car has an odd behaviour where unless I fill it, it doesn’t recognise it’s had any fuel.. it’s not the biggest issue as I just brim it every time and then the range etc all works fine and normal, but if I chuck half a tank in it stays wherever it was before...

Dodgy sensor somewhere I assume - easy fix or not worth the hassle..?
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Steve B

Joined: 27 Aug 2009
Posts: 171
Location: Cheshire

PostPosted: Mon Apr 22, 2019 8:20 pm    Post subject: Reply with quote

This behaviour is normal and is just one of the quirks of the 996.

The gauge can only measure the top two-thirds of fuel in the tank – the remaining third is calculated which means the position of the needle on the dial is only an estimate.

That in itself isn’t a problem, as it always errs on the side of caution. Where it does become an issue, though, is when you part-fill the tank from empty. If you only add a few litres of petrol, it won’t register and the Porsche 996/997 fuel gauge continues to read empty. The only solution is to add enough fuel to fill more than about one-third of the tank.

This is mainly an issue with four-wheel drive models because the tank is shaped around the front differential like a saddle. However, the rear-wheel drive derivatives also don’t give an accurate reading after a relatively small amount of petrol is added to a near-empty tank.

For this reason I always fill it up completely Thumb
2003 Cobalt Blue Porsche 996 C4S
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Joined: 17 Aug 2018
Posts: 22

PostPosted: Tue Apr 23, 2019 8:27 pm    Post subject: Reply with quote

Brilliant. Feature not fault sir. 😂
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